Shelving unit



FIG. 1 is a top view of a shelving unit showing our new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a rear side view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a front, perspective view thereof.

The portion of the bottom illustrated in broken lines in FIG. 2 and the shelf supports shown in broken line in FIG. 7 form no part of the claimed design. 

CLAIM The ornamental design for a shelving unit, as shown and described. 